Abstract
In this study, the output synchronization problem in dynamical networks consisting of nodes that have nonlinear dynamic systems with relative degree one has been explored and solved. The system property of passivity has been found to be a useful tool in solving the output synchronization problem in complex dynamical networks. It is well known, however, that not all dynamic systems possess the passivity property. Nonetheless, it has been shown here how to use passivity in order to output synchronize complex dynamical networks. It is also known that if a nonlinear system is weakly minimum phase and has relative degree one, then it is feedback equivalent to a passive system. Thus, the feedback passivation result has been exploited to investigate and solve the output synchronization problem in dynamical networks. The conditions are found, which do not require the assumption of the negative definiteness property of the outer coupling matrix under which output synchronization of dynamical networks having nodes with relative degree one systems is achieved. Furthermore, it has been found that, when all nodes are feedback equivalent to a strictly passive system, the output synchronization criterion is accomplished with less conservative conditions. An illustrative example along with numerical and simulation results is given to demonstrate the effectiveness of the theoretical findings in this study.
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Liu, Y., Dimirovski, G., Zhao, J. (2016). Output Synchronization of Dynamical Networks Having Nodes with Relative-Degree-One Nonlinear Systems. In: Dimirovski, G. (eds) Complex Systems. Studies in Systems, Decision and Control, vol 55. Springer, Cham. https://doi.org/10.1007/978-3-319-28860-4_3
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DOI: https://doi.org/10.1007/978-3-319-28860-4_3
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